Malignant Hypertensive Retinopathy Diagnosing System based on retina Image
High blood pressure can damage the vessels supplying blood to retina. When the cardiologist finds a hypertension patient
who has the symptoms of hypertensive retinopathy, the cardiologist will help him make referrals to ophthalmology for a complete eye
diagnosis. However, early recognition of hypertensive retinopathy signs is not always easy to diagnose. Due to a lack of ophthalmic
knowledge, the hypertensive retinopathy may be misdiagnosed by the cardiologist. This study provides a malignant hypertensive
retinopathy diagnosis system (MHRD system) to promptly and accurately diagnose malignant hypertensive retinopathy based on
retina image. The symptoms of malignant hypertensive retinopathy include constricted and tortuous arteries, retinal hemorrhage, hard
exudates, cotton wool spots, retinal edema, and papilledema. These symptoms create some bright and dark areas in a gray-level
retinal image. When given a retinal image, the MHRD system hence segments the bright areas, dark areas, and vessels from the
retinal image. It then diagnoses the malignant hypertensive retinopathy based on the characteristics of the segmented bright areas,
dark areas, and vessels. The experiment results show that the MHRD system can give over 85% diagnostic accuracy rate.
IndexTerms- Image Segmentation, Hypertensive Retinopathy, Retinal Image, Keith-Wagener-Barker Grade.